STMicroelectronics TSB582 dual high-output amplifier

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The STMicroelectronics TSB582 dual high-output amplifier simplifies circuitry for driving inductive and low-ohmic loads like motors, valves and rotary resolvers in industrial applications and automotive systems such as steer-by-wire and auto-parking.

The device operates from 4–36 V supplies and contains two operational amplifiers (op amps), each capable of sinking/sourcing up to 200 mA. This enables direct connection of a load in bridge-tied mode, allowing one TSB582 device to replace two single-channel power op amps or high-current drivers built from discrete components. While integrating two op amps into one package, the product is able to save up to 50% of board space and lowers the bill of materials.

Available in industrial- as well as automotive-grade versions, the device addresses applications such as controlling robot movements and position, conveyor belts, and servo motors. Automotive applications include motor-position sensing including steer-by-wire and electric-traction motors, as well as tracking road-wheel rotation in autonomous driver-assistance systems and self-driving vehicles.

The product comes with internal short circuit and over-temperature protection, it has rail-to-rail outputs and operates up to 3.1 MHz gain-bandwidth (GBW). Both the industrial- and automotive-grade versions are qualified over a temperature range of -40 to 125°C, are EMI hardened and provide ESD robustness up to 4 kV HBM.

There are two package options, each with low thermal resistance: an SO8 with exposed thermal pad and a 3 x 3 mm DFN8 with exposed pad and wettable flanks. The wettable flanks aid inspection after soldering to meet automotive quality-assurance requirements. The DFN8 3 x 3 mm package is available now in industrial grade. The equivalent in automotive grade and the SO8 package in both grades will be released within Q3 2022.

The product is part of ST’s 10-years longevity program and free samples are available on the ST eStore.